求翻译：导致产蛋下降的原因通常不是的单一的，是综合性的，如果种鸡品种、饲料原料质量、蛋鸡的光照、疾病的预防控制、饲养环境、人员管理方面任意一个环节没有掌控好，都会影响产蛋下降。是什么意思？

Egg drop is usually not a single, integrated, breeder varieties, the quality of the feed ingredients, the light of the laying hens, disease prevention and control, keeping the environment, personnel management, no control over any aspect of good will affect egg drop.

In the reasons for the decline in egg production is usually not a single, is a comprehensive, if a chicken varieties, feed quality of the raw materials of the chicken egg, and lighting, the prevention of disease control, and breeding environment, personnel management in any one area is not well cont

Causes to produce the reason which the egg drops is usually not sole, is comprehensive, if the kind of chicken variety, the feed raw material quality, the layer illumination, disease anticipatory control, the raising environment, the personnel manage the aspect random link not to have the control to

Cause of the egg drop is not usually a single, is comprehensive, if Chicken breeds, feed ingredients quality, layers of light, disease prevention and control, environment, good personnel management does not control the issue of arbitrary, will affect the egg drop.

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